100 Samurai Sudoku Puzzles
Sudoku Variants
Samurai Sudoku
Samurai Sudoku is a brain
straining version which consists of five normal sudoku
puzzles which overlap. I have to admit that I've never
trued to solve one of these - just looking at them
gives me a headache!
Super Sudoku
Super Sudoku is an
extension of the basic puzzle to a 16 by 16 grid 256
squares. These are subdivided into 16 individual 4 by 4
subsquares. The numbers hexadecimal letters A-F are
usually added to the digits 1-9 and 0, but as with
ordinary Sudoku any distinct symbols could be used.